Basically last week i heard something rattling from my engine ( as if something was loose ) anyways as it was dark and could not see that well it turned out to me that the the turbo damper was loose , because when i put my hand on top it stopped the noise

Soo the next day and up until now it never mde that noise again and never thought nothing else of it

So last night , went under for a look to check oil and water and all that and noticed that one of my bolts were missing where the housing bolts on to the turbo ( 4,17 mm bolts ) should these be threaded or a bolt and a nut ? and 2 were loose , so tightened up and still need another bolt and nut to get it back the way it was Not a big deal really but why would these come loose guys ? and would i be losing power from this ? and would it do any damage at all troops ?

Had to get that off my chest lol its the first problem in a while lol but defo not the last ehh